trolleybus

/trollejbus/

Cases

SingularPluralWhen to use it
nominativetrolleybusthe trolleybustrolleybuslathe trolleybusesthe plain dictionary form — the doer of the sentence
genitivetrolleybusnuthe trolleybus'trolleybuslanıthe trolleybuses'the owner — whose it is
accusativetrolleybusnuthe trolleybus (as the object)trolleybuslanıthe trolleybuses (as the object)a specific, known object — whom or what
dativetrolleybushato the trolleybustrolleybuslağato the trolleybusesdirection or recipient — to where, to whom
locativetrolleybusdaat / in the trolleybustrolleybusladaat / in the trolleybuseswhere it is; also having — mende bar, "I have it"
ablativetrolleybusdanfrom the trolleybustrolleybusladanfrom the trolleybuseswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
mytrolleybusummy trolleybustrolleybuslarımmy trolleybuses
yourtrolleybusungyour trolleybustrolleybuslarıngyour trolleybuses
his / hertrolleybusuhis / her trolleybustrolleybuslarıhis / her trolleybuses
ourtrolleybusubuzour trolleybustrolleybuslarıbızour trolleybuses
you all'strolleybusuğuzyou all's trolleybustrolleybuslarığızyou all's trolleybuses
theirtrolleybuslarıtheir trolleybustrolleybuslarıtheir trolleybuses

The overlap in the last rows is real, not a mistake: trolleybusları can mean "his / her trolleybuses", "their trolleybus", or "their trolleybuses" — context decides.